Honestly, I've seen so many people complain about the characters being repulsive, and unrelatable. However, I find them completely relatable. Their flaws make them seem more relatable, in fact, more-so than several other anime I've watched. The reason folks might be uncomfortable with this is the fact that they, like all humans, are very flawed, and flawed characters can only highlight this in themselves.

I just saw Summer Wars! (the credits are rolling right now! XD) That was fantastic! Really fun movie. I love the art style and the fight scenes, albeit short, were fast and fluid. I love the tension built without physical confrontation, like the Hanadufda game! Haha that was awesome. Loved it.

That's not only normal. It's expected. Additional side effects may include, but are not limited to, extreme happiness, tough to only watch 1 episode, sudden desire to put :3 and x3 face everywhere, and enjoying slice of life more. If any or all of these stay around after the series ends, watch the OVA's. multiple times if necessary.
If side effects still persist, similar animes are K-on!

Well there are two options, search harder or watch it dubbed.
Now which would bring you more enjoyment?
You are accustomed to the Japanese Voice Actors, so that would definitely be a change. Then dubs vary in quality. So the experience might not be as well translated. Then again, it's still the same film, with the characters you love. There's also the fact that you want to watch this since you loved the film.
Good luck picking partner.
:3